Lasairfhiona
Lasairfhíona: 'flame wine' or 'wine made from flames'. This was a very popular name in Connacht in the later Middle Ages.
Many years ago, in the land of Ireland, a young maiden of ruby red hair and emerald eyes was born. Not that this was a particularly odd occurrence, but stay a while longer and it will become clear as to what made the girl affectionately nicknamed 'Fhiona' so different.
On the eve of her twelfth birthday, the young girl began to exhibit strange behavior, hiding from her family when the chance would arrive. While they thought it to be an odd occurrence, her father and mother assumed that womanhood was taking its time ensnaring her and dragging her into adulthood. They had little clue as to what really had happened; their little 'fire wine' was fermenting into a woman with powers over the unknown. As the next year came and her next birthday with it, she revealed what she had been hiding, and engulfed her village in a wave of pleasure and euphoria, initially terrifying the masses, but ultimately enslaving them to her whims. How, you may ask? She had gained the ability to summon hordes of beings with tentacles, each capable of triggering the most pleasurable heights of sexual satisfaction with ease. Friends, family, brothers and sisters all fell to the whims of the creatures, and to her; and any that objected were swiftly dealt with. She had pleasure, she had power, and she had a village of devoutly loyal followers, all at the age of thirteen.
And then the Brits came a year later.
After a bloody conflict with the people of her village, in which all but a handful of her village had died horribly, the English Navy seized her and tried her for witchcraft, finding her guilty of the crime without question and sentencing her to death. She had somewhat prepared for this, however, giving her newborn child to one of the other villagers prior, allowing her mark on the world to remain before she called herself into the void, escaping the bonds of time, space, and death... For now.
A few years ago, she arrived back in the modern world, and quickly made it a point to adapt. Given the changes to the social structure of the present world, the general open-mindedness of the land she arrived in, and how simply scattered power seemed to be, she quickly abandoned her aspect of 'conquest' in exchange for something more simple; domination of those that wish to forcefully assert power over others. She's a distaste for murderers and thugs, herself, and will use her powers and abilities to silence them herself. Hypocritical, perhaps, but it does well to keep her pets loyal. Her motive is simply to draw the attention of those with powers similar to hers, in hopes of drawing out her descendants, assuming her line was not completely wiped out in her absence.
-Powers-
Void Summons
Fhiona has the ability to summon forth creatures from some indistinct void. These creatures take various forms, though usually they are either slimes of some variety or tentacled beasts. While summoned, Fhiona is in tune with all senses of these creatures (smell, touch, taste), and has influence over their actions, though she lacks absolute control. The more creatures she summons, the less hold she has over them, though they will seldom do anything to harm her. Not to say she hasn't spent a fair amount of time in quite a few of them, particularly in her time that she was stuck in the void.
Pheromones
Fhiona herself has been exposed to the beasts of the void for roughly five years (meaning that, in the centuries she's been absent, she's only aged to eighteen), and has adapted to be more akin to them. One of the things she's snatched from a few of them is the ability to secrete pheromones that discretely affect the moods of those around her. Honestly, they don't cause such rapid emotional changes as hate-to-lust... But they generally improve the attitude of those around her towards her, and can get the ball rolling in the event she doesn't just want to summon a beast off the bat.
Void Form
In her time in the void, Fhiona obtained the ability to manipulate her own body to serve as a host for any of her void beings temporarily, giving her the ability to use some of their powers or manipulate her own body to adapt certain traits (tentacles, slime qualities, the like). This can have either nightmarish or rather pleasant results, depending on whom you ask.
Self-Manipulation
Fhiona is capable of changing her gender and age, though unlike many, she is not limited to simply female or hermaphroditic forms. She's also capable of taking the guise of an effeminate male, if the desire so takes her. She can also regress or progress in age as needed, allowing her to cater to most of her victims' whims to draw them in. She also uses this so witnesses to her particular brand of justice are never able to absolutely ID her.